Some cleanups of include/dai/prob.h
Some cleanups of include/dai/prob.h

flurischt/libDAI,eriqande/libDAI-mods,tttamaki/libdai,fivejjs/libDAI,yesimon/libDAI,flurischt/libDAI,AndrewNguyenF3/libdai,fivejjs/libDAI,AndrewNguyenF3/libdai,AndrewNguyenF3/libdai,slnovak/libDAI,midnighteuler/libdai,slnovak/libDAI,tttamaki/libdai,AndrewNguyenF3/libdai,slnovak/libDAI,dbtsai/libDAI,eriqande/libDAI-mods,dbtsai/libDAI,slnovak/libDAI,tttamaki/libdai,fivejjs/libDAI,tttamaki/libdai,fivejjs/libDAI,yesimon/libDAI,midnighteuler/libdai,AndrewNguyenF3/libdai,slnovak/libDAI,yesimon/libDAI,yesimon/libDAI,midnighteuler/libdai,midnighteuler/libdai,yesimon/libDAI,eriqande/libDAI-mods,eriqande/libDAI-mods,midnighteuler/libdai,flurischt/libDAI,eriqande/libDAI-mods,slnovak/libDAI,tttamaki/libdai,dbtsai/libDAI,yesimon/libDAI,dbtsai/libDAI,dbtsai/libDAI,midnighteuler/libdai,fivejjs/libDAI,slnovak/libDAI,flurischt/libDAI,yesimon/libDAI,dbtsai/libDAI,midnighteuler/libdai,flurischt/libDAI